ISO 9001:2015 Certified Manufacturer — CNC Machining & Sheet Metal Fabrication
One Factory for Custom CNC Machined Components and Precision Sheet Metal Fabrication
| ±0.01mm Tolerances | DFM Engineering Support | From Rapid Prototyping to Mass Production | Serving 20+ Countries |
Qingdao Inside Industry Co., Ltd. (Inside Metal Fab) is an ISO 9001:2015–certified manufacturer offering both CNC machining and sheet metal fabrication services under one roof, based in Qingdao, China.
Our integrated facility combines 3/4/5-axis CNC machining with precision sheet metal fabrication — including TRUMPF fiber laser cutting, CNC press brake bending, certified TIG/MIG/robotic welding — plus progressive die stamping, all managed under one quality system.
With over a decade of export experience serving 20+ countries, we support Tier-1/2 OEMs in aerospace, automotive, medical, and industrial automation sectors. Whether you need a single CNC machined prototype or a 100,000-piece sheet metal production run, we deliver with documented precision (MOQ 1 pc).
Every lot is inspected on our Hexagon CMM, with First Article Inspection (FAI) reports, Material Test Reports (MTRs), and RoHS/REACH declarations provided by default.
ISO 9001:2015 Certified- ±0.01mm Achievable Tolerance
- Hexagon CMM Inspection Lab
- TRUMPF Fiber Laser Systems
- 20+ Countries Served
- RoHS & REACH Compliant
Company Overview: Integrated CNC Machining & Sheet Metal Fabrication Under One Quality System
Your Trusted Engineering Partner for Custom CNC Machining & Sheet Metal Fabrication — Serving 20+ Countries Since Over a Decade
Qingdao Inside Industry Co., Ltd. (Inside Metal Fab) integrates 3/4/5-axis CNC machining, precision sheet metal fabrication, and progressive die stamping under one ISO 9001:2015 quality system. Instead of splitting a project across multiple job shops, our clients submit one purchase order and receive one quality chain — from the first CNC machined prototype to the final sheet metal assembly.
What sets us apart is our engineering-first approach. Every new project — whether a CNC machined aluminum housing or a laser-cut and press-brake-formed steel enclosure — passes through a systematic Design for Manufacturability (DFM) review before production begins. Our engineers identify tolerance stack-ups, unnecessary features, and material substitution opportunities, helping clients achieve 15–25% cost reductions and 20–30% lead time improvements.
With over a decade of export experience to 20+ countries, we support Tier-1/2 OEMs in aerospace, automotive, medical, and industrial automation sectors. Whether you need a single CNC machined prototype or a 100,000-piece sheet metal production run — MOQ 1 piece — every lot is inspected on our Hexagon CMM, with FAI reports, MTRs, and RoHS/REACH declarations provided as standard.
CNC Machining & Sheet Metal Fabrication Services Under One Roof
From DFM Consultation to Final Assembly — One Integrated Workflow for Custom Metal Components
Multi-Axis CNC Machining (3/4/5-Axis), CNC milling, turning, drilling, and tapping for complex geometries. We machine aluminum (6061-T6/7075-T6), stainless steel (304/316L), titanium (Ti-6Al-4V), brass, copper, and engineering plastics (PEEK/POM) with tolerances down to ±0.01mm. Precision fits without secondary machining — reducing your incoming inspection cost.
High-power fiber laser cutting for carbon steel up to 25mm, stainless steel up to 20mm, and aluminum up to 16mm, with ±0.05mm positioning accuracy and 0.3mm kerf width. Nitrogen cutting available for oxide-free edges — standard for medical-grade and food-grade applications. Clean edges ready for welding or finishing — no secondary deburring required on most parts.
CNC press brake services with real-time angle monitoring, bending carbon steel up to 20mm, stainless to 10mm, and aluminum to 10mm with ±0.2° angle tolerance. Maximum bending length 4,000mm, maximum press force 300T. Consistent multi-bend profiles — reducing assembly rework on chassis, enclosures, and structural frames.
AWS D1.1/D1.2 certified welders and robotic MIG welding cells for stainless steel 304/316L, aluminum 5052/6061, carbon steel, and high-strength alloys. Formal WPS documents govern each process-material combination. NDT inspection (visual, dye penetrant, ultrasonic, leak test) available on request. Certified welds with traceable documentation — suitable for aerospace and medical assembly audits.
High-Volume Production,Progressive die stamping, deep drawing, blanking, and multi-slide forming on stainless steel, aluminum, carbon steel, copper, and brass. Typical production volumes 10,000 to 1,000,000+ pieces per run. In-house tooling design and maintenance reduces per-unit cost on repeat orders. Lower per-unit cost on repeat orders — ideal for brackets, clips, contacts, connectors, and terminals.
The Inside Advantage: Engineering Team, Equipment & Technical Capabilities
Why Engineering Teams Choose Us for Complex CNC Machining and Sheet Metal Fabrication Projects
Engineering Team: DFM-First Approach for Every Project
Our engineering team reviews every drawing before production begins — whether it’s a CNC machined aluminum housing or a laser-cut and press-brake-formed steel enclosure. We identify:
Tolerance stack-ups that could cause assembly issues
Unnecessary features that increase cost without adding function
Material substitution opportunities that reduce weight or cost
Result: Clients routinely achieve 15–25% cost reductions and 20–30% lead time improvements.
Equipment & Technical Capabilities at a Glance
Multi-Axis CNC Machining
3-axis, 4-axis, and 5-axis CNC centers for complex geometries, undercuts, and compound angles. Maximum part size 1,200 x 800 x 600mm.
CNC Turning & Milling
Precision CNC turning for cylindrical parts (up to Ø400mm) and multi-axis CNC milling for complex 3D geometries.
Material Science Expertise
Aluminum alloys (6061-T6, 7075-T6), Stainless Steel (304, 316L, 17-4 PH), Titanium Grade 5 (Ti-6Al-4V), Brass, Copper, and Engineering Plastics (PEEK, POM/Delrin).
Sheet Metal Fabrication Integration
TRUMPF fiber laser cutting (up to 25mm carbon steel), CNC press brake forming (up to 4,000mm bending length), robotic welding, and structural assembly in a single facility.
Metal Stamping & Progressive Die
Progressive die stamping, deep drawing, and blanking for high-volume orders (10,000–1,000,000+ pieces).
Metrology & Verification
Hexagon CMM coordinate measuring machines, optical projectors, surface roughness testers, and Rockwell/Vickers hardness testing — ensuring every part meets your exact specifications.
What This Means for Your Project
When you work with an engineering-first team that has both CNC machining and sheet metal fabrication under one roof, you get:
Fewer suppliers to manage — one purchase order covers both CNC machined parts and sheet metal assemblies
Faster turnaround — DFM feedback within 2 working days, quotation within 24 hours
Lower total cost — 15–25% cost reductions through DFM optimization
Consistent quality — same inspection protocol (CMM, FAI, MTR) from prototype to mass production
Quality Control & Metrology: CNC Machining and Sheet Metal Fabrication Inspection
ISO 9001:2015 Quality System — Every CNC Machined and Sheet Metal Fabricated Part Ships with Full Dimensional Reports
Our Quality Assurance Philosophy: Verified, Not Assumed
In precision manufacturing, quality is not a department — it is a system. At Qingdao Inside Industry, quality assurance is integrated into every stage of production: from raw material certification (Mill Test Reports / MTRs) through in-process dimensional checks, to final CMM verification and pre-shipment inspection.
This applies equally to CNC machined components and sheet metal fabricated assemblies. Whether your part is a 5-axis CNC machined aluminum housing or a laser-cut and press-brake-formed steel enclosure, it goes through the same documented inspection protocol.
Every order follows a documented 5-stage inspection process:
Incoming Material Inspection — material grade verification against Mill Test Reports (MTRs)
In-Process Inspection — dimensional checks at each production stage (after CNC machining, laser cutting, press brake bending, and welding)
First Article Inspection (FAI) — full dimensional report on the first production piece, verified on our Hexagon CMM per your GD&T callouts
Final Inspection — 100% inspection or AQL sampling before shipment
Pre-Shipment Documentation — dimensional reports, MTRs, FAI reports, and RoHS/REACH declarations
Inspection Equipment for CNC Machining and Sheet Metal Fabrication
Hexagon CMM (Coordinate Measuring Machine)
Full 3D dimensional verification of complex CNC machined geometries and welded sheet metal assemblies. Capable of measuring to ±0.001mm repeatability.
Optical Projectors
Profile and contour measurement for stamped, turned, and laser-cut profiles.
Surface Roughness Testers (Profilometers)
Ra measurement per ISO 1302 standard for all finishing specifications.
Hardness Testing
Rockwell and Vickers hardness verification for heat-treated and specialty alloy components.
Digital Bore Gauges & Height Gauges (TESA Hite 400)
For precise measurement of bore diameters and height dimensions on CNC machined parts
Certifications & Third-Party Validation — ISO 9001:2015, AWS D1.1/D1.2, RoHS & REACH
Full Documentation Available for Customer Audits — Covering Both CNC Machining and Sheet Metal Fabrication
1. ISO 9001:2015 — Quality Management System
Full QMS documentation available for customer audits. Certification covers CNC machining, sheet metal fabrication, welding, and progressive die stamping under one unified quality system.
2. AWS D1.1 / D1.2 — Structural Welding Certification
AWS-standard certified welders for structural and precision welding programs. Formal WPS documents govern each process-material combination. NDT inspection (visual, dye penetrant, ultrasonic, leak test) available on request.
3. RoHS & REACH Compliance
Compliant process controls for regulated-market shipments. RoHS and REACH declarations are provided with every order — supporting EU and North American market access.
4. Utility Model Patents
Held for high-temperature stainless steel fixturing systems — demonstrating engineering capability beyond standard manufacturing.
5. Third-Party Inspection Welcome
SGS, TÜV Rheinland, Bureau Veritas (BV), or any customer-appointed agency. Available for dimensional inspection, weld quality verification, material verification, and pre-shipment inspection.
Mission & Vision: Building Value Through Precision and Integrity
Our Commitment to CNC Machining and Sheet Metal Fabrication Clients Worldwide
Our mission is to deliver precision CNC machined components and sheet metal fabricated assemblies that help our clients grow stronger in a competitive global market. We do this by combining engineering-first DFM support, ISO 9001:2015 quality control, and a single-factory workflow that covers both CNC machining and sheet metal fabrication.
Our vision is to become the trusted single-source manufacturing partner for engineering teams worldwide — a factory where CNC machining and sheet metal fabrication are not two separate services, but one integrated capability under one ISO 9001:2015 quality system.
We believe real precision is achieved when craftsmanship meets innovation — and when commitments are measurable. We track three core metrics across every project:
On-time delivery rate — reported to clients on request
First-pass yield — monitored via SPC on production batches of 50+ pieces
Customer retention — long-term partnerships with OEM clients in 20+ countries
Why Choose Us: 6 Reasons OEM Buyers Choose Inside Industry for CNC Machining & Sheet Metal Fabrication
Engineering-First Manufacturing, Documented Quality, and One-Stop Production — From Prototype to Mass Production
We aim not just to supply products — but to build long-term manufacturing partnerships based on trust and performance.
Precision Across CNC Machining & Sheet Metal Fabrication
±0.01mm CNC machining tolerance, ±0.2° press brake bending tolerance, and ±0.05mm fiber laser cutting accuracy — verified on our Hexagon CMM with full dimensional reports provided with every order.
Precision fits without secondary machining — reducing your incoming inspection cost..
IP Protection & NDA-Backed Data Security
NDA signed before drawing exchange. CAD files and specifications stored on access-controlled servers, accessible only to engineers assigned to your program. No drawings shared with sub-suppliers without written approval.
Your IP and design data are protected from the first email to final delivery.
24-Hour Quotation & 2-Day DFM Feedback
Every RFQ receives a written DFM review from our engineering team within 2 working days, and a detailed quotation within 24 hours. No charge for DFM feedback on CNC machining or sheet metal fabrication projects.
Faster project kickoff and lower engineering risk — before production begins.
Flexibility from 1 Piece to 1,000,000+ Units
MOQ 1 piece for CNC machining and sheet metal fabrication. Prototype lead time 3–7 days. High-volume stamping and production runs up to 1,000,000+ pieces per order.
Support for both early-stage prototyping and full-scale OEM production — from one supplier.
Cost Optimization Through DFM Engineering
Clients routinely achieve 15–25% cost reductions and 20–30% lead time improvements by acting on our DFM feedback — covering tolerance stack-ups, unnecessary features, and material substitution opportunities.
Lower piece-part cost and faster delivery, validated across hundreds of CNC and sheet metal projects.
Export-Ready Delivery to 20+ Countries
Sea freight from Qingdao Port reaches Hamburg in ≈28 days, Rotterdam in ≈30 days, Long Beach in ≈18 days. Airfreight to European hubs in 3–5 days. Full export documentation: MTRs, CoC, Certificate of Origin, and RoHS/REACH declarations.
A factory-to-door manufacturing partner with traceable logistics and full compliance documentation.
Global Reach & Export Experience — CNC Machined Parts & Sheet Metal Components to 20+ Countries
Factory-to-Door Manufacturing Partner for OEM Clients in North America, Europe, Asia-Pacific & the Middle East
Qingdao Inside Industry exports both CNC machined parts and sheet metal fabricated assemblies to OEM clients in 20+ countries. Our export operations team manages the complete logistics chain — commercial invoices, packing lists, certificates of origin, MTRs, CoC, and customs clearance support — ensuring frictionless delivery to your facility or warehouse.
Europe: Germany, UK, France, Netherlands, Italy, Sweden — sea freight from Qingdao Port (CNQDG) reaches Hamburg in ≈28 days, Rotterdam in ≈30 days.
North America: USA, Canada, Mexico — airfreight from Qingdao Jiaodong Airport (TAO) reaches major hubs in 3–5 days for urgent orders.
Asia-Pacific: Japan, Australia, South Korea, Southeast Asia.
Middle East & Africa: UAE, Saudi Arabia, South Africa, North Africa.
Our export logistics capabilities include:
Flexible shipping terms: EXW | FOB | CIF | DDP (Delivered Duty Paid)
Shipping partners: DHL, FedEx, UPS, and sea freight forwarders
Export documentation: Certificates of Origin, commercial invoices, packing lists, MTRs, CoC
Compliance support: RoHS & REACH declarations for regulated markets
Multi-language support: English, German, Japanese, and other languages available on request
Europe
South America
Japan
Australia
South Asia
Russia
South Africa
Southeast Asia
United Kingdom
United States
Mexico
United Arab Emirates
Middle East
Canada
China
North Africa
Asia
Engineering a Better Future Together
Sustainability & Responsibility
We are committed to sustainable and responsible manufacturing.
Inside Industry continuously upgrades its production lines with energy-efficient CNC equipment, laser systems, and recyclable materials.
Our sustainability policy includes:
- Energy-saving production and waste reduction
- Eco-friendly coatings and packaging materials
- Employee safety and fair working conditions
Our Commitment to Every CNC Machining & Sheet Metal Fabrication Project
Beyond Manufacturing — Measurable Commitments to Quality, Delivery, and Partnership
Every project we take is backed by measurable commitments. Here is what you can expect when you work with Qingdao Inside Industry:
Quality Commitment
Every CNC machined and sheet metal fabricated part inspected on our Hexagon CMM
Full dimensional inspection reports, FAI reports, MTRs, and RoHS/REACH declarations provided with every order
ISO 9001:2015 quality system — documentation available for customer audits
Delivery Commitment
24-hour quotation with written DFM feedback
Prototype lead time 3–7 days
On-time delivery rate tracked and reported to clients on request
Export-ready packaging and full logistics documentation for 20+ countries
Engineering Commitment
Free DFM review on every project — before production begins
Written DFM report within 2 working days
Tolerance stack-up, feature, and material substitution analysis included
Partnership Commitment
One purchase order covers both CNC machining and sheet metal fabrication
Dedicated project engineer assigned to each program
NDA signed before drawing exchange — your IP protected
Long-term partnership with OEM clients in 20+ countries
Whether you need rapid prototyping or mass production, Qingdao Inside Industry is your Custom Metal Components Manufacturer for engineering integrity and reliable delivery.
